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Simple biology
B1
Respiration
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Created by
Evie paizis
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Cards (29)
What is the process of respiration primarily about?
Transferring energy from
glucose
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Why is respiration not the same as breathing?
Respiration is
energy transfer
, not breathing
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In which organisms does respiration occur?
Nearly all
living
organisms
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What is ATP used for in cells?
To store energy for cell processes
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What type of reaction is respiration?
Exothermic
reaction
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What is released as a byproduct of respiration?
Heat energy
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Can organisms use substances other than glucose for respiration?
Yes, they can use other
biological
molecules
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What is the term for the molecule broken down in respiration?
Substrate
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What are the two types of respiration?
Aerobic respiration
Anaerobic respiration
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What does "aerobic" mean?
With
oxygen
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What is produced during aerobic respiration?
Lots of
ATP
, specifically
32
molecules
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What is the equation for aerobic respiration?
glucose
+
oxygen
→
carbon dioxide
+
water
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How many ATP molecules are produced in aerobic respiration?
32
ATP molecules
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What does "anaerobic" mean?
Without
oxygen
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How much energy does anaerobic respiration transfer per glucose molecule?
Just
2 molecules
of
ATP
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What is produced during anaerobic respiration in animals?
Lactic acid
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What is the word equation for anaerobic respiration in animals?
glucose
→ lactic acid
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What do plants produce during anaerobic respiration?
Ethanol
and carbon dioxide
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What is the word equation for anaerobic respiration in plants?
glucose
→ ethanol +
carbon dioxide
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Compare aerobic and anaerobic respiration.
Aerobic
:
Oxygen
present
Produces 32
ATP
Products:
CO₂
and
water
Anaerobic:
Not enough oxygen present
Produces 2 ATP
Products:
Lactic acid
(animals) or
ethanol
+ CO₂ (plants)
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Why is aerobic respiration generally better for organisms?
It produces more energy (
ATP
)
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What is the energy transferred per molecule of glucose in aerobic respiration?
Lots of energy (
32
ATP
)
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What is the energy transferred per molecule of glucose in anaerobic respiration?
2
ATP
made
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What are the products of anaerobic respiration in plants?
Ethanol
and carbon dioxide
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Why do muscles switch to anaerobic respiration during intense exercise?
They can't get enough
oxygen
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What happens to lactic acid produced in muscles?
It can cause
fatigue
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What is a common condition that leads to anaerobic respiration in plants?
Waterlogged
soil
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What type of respiration do yeasts perform?
Anaerobic respiration
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What is the significance of anaerobic respiration in yeast?
It produces
ethanol
for fermentation
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